CVE-2022-41723 Denial of service via crafted HTTP/2 stream in net/http and golang.org/x/net
High 7.5
Published
Updated
Check this codebase for CVE-2022-41723 and fix it if it is affected.
What it is: CVE-2022-41723 is a high-severity denial of service vulnerability in Golang Go, published on 28 Feb 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2022-41723 in the wild and no public exploit code.
Affected packages and fixed versions:
- golang.org/x/net (Go): affected all versions; fixed in 0.7.0
- golang.org/x/net (Go): affected all versions; fixed in 0.7.0
- golang.org/x/net (Go): affected all versions; fixed in 0.7.0
- golang (Bitnami): affected all versions; fixed in 1.19.6, 1.20.1
- stdlib (Go): affected all versions; fixed in 1.19.6, 1.20.1
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/CVE-2022-41723/ (Markdown: https://insights.sbomify.com/CVE-2022-41723/index.md)
Attackers can cause denial of service via excessive CPU consumption in the HPACK decoder using crafted HTTP/2 streams.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2022-41723?
CVE-2022-41723 is a high-severity denial of service vulnerability in Golang Go, published on 28 Feb 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A maliciously crafted HTTP/2 stream could cause excessive CPU consumption in the HPACK decoder, sufficient to cause a denial of service from a small number of small requests.
Which versions are affected by CVE-2022-41723?
5 open source packages ship an affected version, including golang.org/x/net, golang and stdlib. It affects 3 products.
| Package | Affected | Fixed in |
|---|---|---|
golang.org/x/net Go | All versions | 0.7.0 |
golang.org/x/net Go | All versions | 0.7.0 |
golang.org/x/net Go | All versions | 0.7.0 |
golang Bitnami | All versions | 1.19.6, 1.20.1 |
stdlib Go | All versions | 1.19.6, 1.20.1 |
Linux distribution packages (28)
rhc Red Hat:enterprise_linux:8::appstream | All versions | 1:0.2.4-3.el8_9 |
podman Red Hat:openshift:4.13::el8 | All versions | 3:4.4.1-5.1.rhaos4.13.el8 |
podman-catatonit Red Hat:openshift:4.13::el8 | All versions | 3:4.4.1-5.1.rhaos4.13.el8 |
podman-catatonit-debuginfo Red Hat:openshift:4.13::el8 | All versions | 3:4.4.1-5.1.rhaos4.13.el8 |
podman-debuginfo Red Hat:openshift:4.13::el8 | All versions | 3:4.4.1-5.1.rhaos4.13.el8 |
podman-debugsource Red Hat:openshift:4.13::el8 | All versions | 3:4.4.1-5.1.rhaos4.13.el8 |
podman-docker Red Hat:openshift:4.13::el8 | All versions | 3:4.4.1-5.1.rhaos4.13.el8 |
podman-gvproxy Red Hat:openshift:4.13::el8 | All versions | 3:4.4.1-5.1.rhaos4.13.el8 |
podman-gvproxy-debuginfo Red Hat:openshift:4.13::el8 | All versions | 3:4.4.1-5.1.rhaos4.13.el8 |
podman-plugins Red Hat:openshift:4.13::el8 | All versions | 3:4.4.1-5.1.rhaos4.13.el8 |
podman-plugins-debuginfo Red Hat:openshift:4.13::el8 | All versions | 3:4.4.1-5.1.rhaos4.13.el8 |
podman-remote Red Hat:openshift:4.13::el8 | All versions | 3:4.4.1-5.1.rhaos4.13.el8 |
podman-remote-debuginfo Red Hat:openshift:4.13::el8 | All versions | 3:4.4.1-5.1.rhaos4.13.el8 |
podman-tests Red Hat:openshift:4.13::el8 | All versions | 3:4.4.1-5.1.rhaos4.13.el8 |
podman Red Hat:openshift:4.13::el9 | All versions | 3:4.4.1-6.1.1.rhaos4.13.el9 |
podman-debuginfo Red Hat:openshift:4.13::el9 | All versions | 3:4.4.1-6.1.1.rhaos4.13.el9 |
podman-debugsource Red Hat:openshift:4.13::el9 | All versions | 3:4.4.1-6.1.1.rhaos4.13.el9 |
podman-docker Red Hat:openshift:4.13::el9 | All versions | 3:4.4.1-6.1.1.rhaos4.13.el9 |
podman-gvproxy Red Hat:openshift:4.13::el9 | All versions | 3:4.4.1-6.1.1.rhaos4.13.el9 |
podman-gvproxy-debuginfo Red Hat:openshift:4.13::el9 | All versions | 3:4.4.1-6.1.1.rhaos4.13.el9 |
podman-plugins Red Hat:openshift:4.13::el9 | All versions | 3:4.4.1-6.1.1.rhaos4.13.el9 |
podman-plugins-debuginfo Red Hat:openshift:4.13::el9 | All versions | 3:4.4.1-6.1.1.rhaos4.13.el9 |
podman-remote Red Hat:openshift:4.13::el9 | All versions | 3:4.4.1-6.1.1.rhaos4.13.el9 |
podman-remote-debuginfo Red Hat:openshift:4.13::el9 | All versions | 3:4.4.1-6.1.1.rhaos4.13.el9 |
podman-tests Red Hat:openshift:4.13::el9 | All versions | 3:4.4.1-6.1.1.rhaos4.13.el9 |
docker-compose openSUSE:Tumbleweed | All versions | 2.17.0-1.1 |
golang-github-prometheus-prometheus openSUSE:Tumbleweed | All versions | 2.46.0-2.1 |
grafana openSUSE:Tumbleweed | All versions | 9.3.6-2.1 |
Products include Golang Go, Golang Hpack, Golang Http2.
How do I fix CVE-2022-41723?
Upgrade golang.org/x/net to 0.7.0 or later.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2022-41723 being exploited?
There is no known exploitation of CVE-2022-41723 in the wild and no public exploit code.
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Sources
Also known as AZL-25350, AZL-25939, AZL-25940, AZL-26732, AZL-34543, AZL-34908 and 28 more.